CN204320308U - Autoclave combination stirred reactor - Google Patents
Autoclave combination stirred reactor Download PDFInfo
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- CN204320308U CN204320308U CN201420620360.7U CN201420620360U CN204320308U CN 204320308 U CN204320308 U CN 204320308U CN 201420620360 U CN201420620360 U CN 201420620360U CN 204320308 U CN204320308 U CN 204320308U
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Abstract
The utility model relates to a kind of autoclave combination stirred reactor, mainly solves the problem that heat and mass efficiency is low, non-ldeal mixing degree is high existed in pre-existing reactors.The utility model is by comprising jacketed kettle, kettle cover, concentric hollow guide shell group, Concentric different-speed agitator group, still bottom (head) and lower shaft bearing; Wherein, described concentric hollow guide shell group comprises internal layer hollow flow-guiding cylinder, and concentric hollow guide shell group bottom is fixed on the still bottom (head) of autoclave body bottom, and top is fixed on Limit Bearing; Interior agitator is arranged on interior shaft, is positioned at internal layer hollow flow-guiding cylinder; External agitator is arranged on outer shaft, and is positioned at outside internal layer guide shell; The technical scheme that described interior agitator and external agitator can independently control, solves this problem preferably, can be used in the suitability for industrialized production of polyacrylonitrile spinning solution.
Description
Technical field
The utility model relates to a kind of autoclave combination stirred reactor, specifically a kind of autoclave combination stirred reactor being applicable to acrylonitrile solution polymerization.
Background technology
The preparation of polyacrylonitrile (PAN) spinning solution is the primary operation in PAN base carbon fibre preparation process, is also the committed step determining final carbon fiber mechanical property.The most frequently used method of PAN spinning solution is prepared in polymerisation in solution at present, and the method has the features such as system viscosity excursion is large, heat release is violent, the reaction time is long.The reduction that its medium viscosity increases Matter Transfer flow and heat transfer coefficient in the polymeric kettle that causes will cause temperature in the kettle and concentration seriously to be emanated.Common phenomenon is that temperature of charge significantly increases progressively from heat-transfer area to still center, and carries out this non-further obvious from desirable trend with reaction, is just alleviated until rate of heat release is reduced to reduced levels.The molecular structure of final PAN is difficult to be effectively controlled, and also cannot draw clear and definite polymerization process condition.For solving this type of heat and moisture transfer problems, in patent, propose various comparatively novel method.
Reactor many employings agitator band blade design of the prior art be the important method improving heat transfer coefficient, but scraper certainly will contact with heat-transfer area, cannot avoid wearing and tearing and contaminated material.In addition, because acrylonitrile solution polymerization is to responsive to temperature, still outer circulation is adopted to reach temperature control object with main body mixing of materials again to partial material cooling and improper.The very difficult realization of outer loop amount is improved, because the highly viscous fluid conveying equipment not having flow enough large for reducing this still internal-external temperature difference.Single shaft composite stirrer is deficient in stability and flexibility then, because the operation rotating speed difference that different agitator structure form is suitable for is larger.If two helical ribbon agitator rotates in highly viscous fluid high speed will produce a large amount of heat of stirring, increase the thermic load of reactor on the contrary.Adopt twin shaft or multiaxis composite stirrer, the amplification space of reactor is still very limited and be not suitable for extensive acrylonitrile solution copolymerization.Therefore, the utility model think can adopt a kind of in establish the twin shaft of heat transfer member or multiaxis composite stirring reactor solve acrylonitrile solution polymer reactor remove heat difficulty, be difficult to maximize problem.
Utility model content
To be solved in the utility model is the reaction volume that exists in existing acrylonitrile solution polymer reactor and heat transfer area is little, heat transfer efficiency is low and the unequal problem of mixing of materials, provides a kind of new autoclave to combine stirred reactor.The homogeneous polymerization system that this reactor is large to spread of viscosity has better applicability, can maintain higher still Inner eycle amount, realizes efficiently mixing, and is easy to maximize.
For solving the problem, the utility model is by the following technical solutions: a kind of acrylonitrile solution polymerization autoclave combines stirred reactor, mainly comprises jacketed kettle, kettle cover, concentric hollow guide shell group, Concentric different-speed agitator, still bottom (head) and lower shaft bearing; Described kettle cover removably covers on kettle, and fixed seal connection, described still bottom (head) is fixed on autoclave body bottom, and base bearing seat is positioned at still bottom (head); Wherein, described Concentric different-speed agitator group comprises interior shaft, outer shaft, interior agitator and external agitator, and outer shaft is hollow, stretches in kettle by kettle cover, arranges interior shaft with one heart in outer shaft, and interior shaft is provided with Limit Bearing; Described concentric hollow guide shell group at least comprises internal layer hollow flow-guiding cylinder, and concentric hollow guide shell group bottom is fixed on the still bottom (head) of autoclave body bottom, and top is fixed on Limit Bearing; Interior agitator is arranged on interior shaft, is positioned at internal layer hollow flow-guiding cylinder; External agitator is arranged on outer shaft, and is positioned at outside internal layer guide shell; Described interior agitator and external agitator can independently control.
In technique scheme, described concentric hollow guide shell group preferably also comprises at least one outer hollow flow-guiding cylinder, and concentric locking collar is loaded on outside internal layer hollow flow-guiding cylinder; Described external agitator is preferably placed between adjacent inner layer hollow flow-guiding cylinder and outer hollow flow-guiding cylinder, between adjacent outward layer hollow flow-guiding cylinder and/or between outer hollow flow-guiding cylinder and inner wall of kettle; Described external agitator is preferably the one in individual layer anchor agitator, multilayer anchor agitator, double ribbon agitator; Described interior agitator is preferably screw agitator; The longitudinal section of described still bottom (head) is preferably W shape, and described interior shaft is limited in the bearing block of this W shape end socket inside, and described interior agitator and W shape still bottom (head) inner concave platform joint preferably arrange labyrinth seal.Described internal layer hollow flow-guiding cylinder and outer hollow flow-guiding cylinder inside are preferably provided with double helix deflector, and are connected with the jacket water (J.W.) circulatory system by detachable pipeline; Internal layer hollow flow-guiding cylinder and outer hollow flow-guiding cylinder connect into spatial integral structure by bottom stiffener.The ribbon leaf of described two helical ribbon agitators is preferably welded in the thin bar of support bar, and ribbon leaf does not directly contact with support bar, and the band leaf before and after thin bar is designed with through hole; Support bar is uniformly distributed along the circumference, decision design more than 4.The lower end of described screw agitator preferably adds the high shear paddle oars such as turbine and sweeps structure for W shape boss.Two ribbon interlobar septums between described adjacent two support bars have elongated hole, and the width in hole is preferably 30 ~ 80mm; The gap of ribbon blade and still inwall or water conservancy diversion barrel is preferably at 1 ~ 10mm.Described internal layer guide shell top decision design gusset plate, gusset plate is connected with the limit assembly be arranged between outer shaft and interior shaft.The described support bar top being positioned at outermost pair of helical ribbon agitator is preferably to still central reduction, and materail tube design is between outermost layer support bar top and still inwall.
Between still inwall and outermost layer guide shell, and in annular space between adjacent guide cylinder all design have anchor formula or the helix(ribbon type) agitator of fillet elongated hole.Be provided with screw agitator in innermost layer guide shell, its shaft is connected through the device such as quill shaft and driven by power of external agitator.The blade of outer agitator different-diameter can consolidate intensity by strengthening oval rod in guide shell upper space, makes it Special composition network structure and improves operation stability.Blade designs the exchange strengthened between wall material with annular space center material while certain free air space is provided of fillet elongated hole to mix.
Screw agitator provides material full still circulation mixing institute energy requirement.Outer agitator in low sticky situation to play a baffle effect, then to reduce sticky parietal layer inventory in high sticky situation.If outer agitator is helical-ribbon type, it can also compensate screw agitator and decline because viscosity rising and rotating speed reduce the delivery flow caused under height glues situation, realizes the full still circulation of remaining valid under height glues.
Be different from common ellipse head and built-in base bearing, adopt W tee section end socket can reduce the bad district of mixing at Fu Di center.Meanwhile, the minimum point Bu center at the bottom of still, can install external base bearing when not affecting and installing baiting valve.
Guide shell adopts hollow structure, and inside establish double helix deflector, heat transferring medium imports and exports the lower surface all designed at guide shell.Due to the asymmetry structure of agitator and the complexity of still flow field, guide shell unbalance stress, if generation is vibrated by spacing hypopexy, damage of even resonating.To this, the utility model is reinforced especially to bottom guide shell, multilayer guide shell is formed overall in bottom.
Autoclave of the present utility model is adopted to combine stirred reactor, the homogeneous polymerization system that this reactor is large to spread of viscosity has better applicability, there is reaction volume and heat transfer area is large, heat transfer efficiency is high, mixing of materials is even, higher still Inner eycle amount can be maintained, realize efficient mixing, and be easy to maximization advantage, achieve good technique effect.
Accompanying drawing explanation
Fig. 1 adopts two ribbon as the structural representation of outer agitator.
Wherein, 1 is lower shaft bearing, 2, 2 ' is guide shell heat transferring medium inlet/outlet pipe, 3, 3 ' is filling material seal gland, 4, 4 ' is stuffing-box, 5, 5 ' is O type circle, 6 is chuck import, 7 is two helical ribbon agitators, 8 is jacketed kettle, 9 is heat exchange guide shell, 10 is screw agitator, 11 is interior axle shaft joint, 12 is guide shell Limit Bearing, 13 is the outer shaft of hollow, 14 is feed pipe, 15 is JO, 16 is external agitator support bar, 17 is guide shell top limit support board, 18 is labyrinth seal, 19 is discharging nozzles, 20 is W shape still bottom (head).
Fig. 2 is a kind of version having the two helical ribbon agitator of fillet elongated hole.
Wherein, 21 is ribbon weld space, and 22 is ribbon welding thin bar, and 23 is ribbon support bar connecting shaft spoke, and 24 for strengthening annulus in location, and 25 is fastening nut, and 26 is fillet elongated hole.
Fig. 3 is the structural representation adopting porous anchor formula oar as outer agitator and design Multi-layer exchanging heat guide shell.
Wherein, 27 is that internal layer guide shell heat transferring medium is imported and exported, 28 is multilayer guide shell bottom fixed board, 29 is double-deck heat exchange guide shell, and 30 is anchor agitator reinforcement elliptical ring, and 31 is internal layer slotted hole anchor formula oar, 32 is that inside and outside anchor formula oar connects elliptical ring, 33 is outer slotted hole anchor formula oar, and 34 is fillet elongated hole, and 35 is blade connecting shaft bolt hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of autoclave combination stirred reactor that can be used for acrylonitrile solution copolymerization as shown in Figures 1 to 3, mainly comprise external bottom bearing block 1, chuck import 6, two helical ribbon agitator 7, jacketed kettle 8, heat exchange guide shell (i.e. internal layer hollow flow-guiding cylinder) 9, screw agitator 10, solid interior shaft 11, guide shell Limit Bearing 12, hollow outer shaft 13, feed pipe 14, JO 15, guide shell limiting plate 17, base bearing labyrinth seal 18, discharging nozzles 19 and W shape still bottom (head) 20.Be designed with two kinds of independent agitators controlled in kettle 8, wherein screw agitator 10 also keeps with it concentric to install through a hollow shaft 13, is limited in outboard bearing seat 1 bottom it by a labyrinth seal design 18.Hollow shaft 13 then installs two helical ribbon agitator 7 by fastening bolt or flange 25, and ribbon leaf is welded on vertical support bar 16, but does not directly contact with support, and arranges corresponding welding thin bar 22 and through hole 21, to reduce mixing dead angle.Ribbon leaf has fillet elongated hole 26, promote that wall material mixes with the exchange of annular space center storeroom further.Design heat exchange guide shell 9 between screw agitator 10 and two helical ribbon agitator 7, while increasing heat exchange area, shorten heat transfer distances.Be fixed on kettle 8 bottom bulkhead by plate bottom guide shell, top is then designed limiting plate 17 and is connected with the Limit Bearing 12 be arranged between inside and outside shaft, rocks to avoid or to reduce guide shell top.Guide shell can be designed to bilayer or sandwich construction 29.Outer agitator also can be designed to double-deck or multi-layer porous anchor agitator 31,32.Anchor formula oar can be formed by the direct Linear cut of steel plate or laser cutting, is connected by 35 fastening bolts with shaft, and by the Special composition networking of reinforcement thin bar 32 and 30, saves welding operation, thus improve structure precision.
Claims (10)
1. an autoclave combination stirred reactor, comprises jacketed kettle (8), kettle cover, concentric hollow guide shell group, Concentric different-speed agitator group, still bottom (head) (20) and lower shaft bearing (1); Described kettle cover removably covers on kettle, and fixed seal connection, described still bottom (head) is fixed on autoclave body bottom, and base bearing seat is positioned at still bottom (head); Wherein, described Concentric different-speed agitator group comprises interior shaft (11), outer shaft (13), interior agitator (10) and external agitator (7), outer shaft is hollow, stretch in kettle by kettle cover, in outer shaft, interior shaft is set with one heart, interior shaft is provided with Limit Bearing (12); Described concentric hollow guide shell group comprises internal layer hollow flow-guiding cylinder (9), and concentric hollow guide shell group bottom is fixed on the still bottom (head) of autoclave body bottom, and top is fixed on Limit Bearing; Interior agitator is arranged on interior shaft, is positioned at internal layer hollow flow-guiding cylinder; External agitator is arranged on outer shaft, and is positioned at outside internal layer guide shell; Described interior agitator and external agitator can independently control.
2. autoclave combines stirred reactor according to claim 1, and it is characterized in that: described concentric hollow guide shell group also comprises at least one outer hollow flow-guiding cylinder, concentric locking collar is loaded on outside internal layer hollow flow-guiding cylinder; Described external agitator is between adjacent inner layer hollow flow-guiding cylinder and outer hollow flow-guiding cylinder, between adjacent outward layer hollow flow-guiding cylinder and/or between outer hollow flow-guiding cylinder and inner wall of kettle.
3. autoclave combines stirred reactor according to claim 1, and it is characterized in that: described external agitator is the one in individual layer anchor agitator, multilayer anchor agitator, double ribbon agitator, described interior agitator is screw agitator (10).
4. autoclave combines stirred reactor according to claim 1, it is characterized in that: the longitudinal section of described still bottom (head) (20) is W shape, described interior shaft is limited in the lower shaft bearing (1) of this W shape end socket inside, and described interior agitator and W shape still bottom (head) inner concave platform joint arrange labyrinth seal (19).
5. autoclave combination stirred reactor according to claim 1 or 2, it is characterized in that: described internal layer hollow flow-guiding cylinder and outer hollow flow-guiding cylinder inside are provided with double helix deflector, and be connected with the jacket water (J.W.) circulatory system by detachable pipeline (2,2 '); Internal layer hollow flow-guiding cylinder and outer hollow flow-guiding cylinder connect into spatial integral structure by bottom stiffener.
6. autoclave combines stirred reactor according to claim 3, be further characterized in that: the ribbon leaf of described two helical ribbon agitators is welded in the thin bar (22) of support bar (16), ribbon leaf does not directly contact with support bar, the band leaf before and after thin bar is designed with through hole (21); Support bar is uniformly distributed along the circumference, and at least designs more than 4.
7. autoclave combination stirred reactor according to claim 3, is further characterized in that: the lower end of described screw agitator adds turbine and sweeps structure for W shape boss.
8. autoclave combines stirred reactor according to claim 6, and be further characterized in that: the two ribbon interlobar septums between described adjacent two support bars have elongated hole (26), the width in hole is 30 ~ 80mm; The gap of ribbon blade and still inwall or water conservancy diversion barrel is at 1 ~ 10mm.
9. autoclave combination stirred reactor according to claim 1 or 2, be further characterized in that: described internal layer guide shell upper design has gusset plate (17), and gusset plate is connected with the limit assembly be arranged between outer shaft and interior shaft (12).
10. autoclave combines stirred reactor according to claim 6, be further characterized in that: described in be positioned at the support bar top (20) of outermost pair of helical ribbon agitator to still central reduction, materail tube (14) design between outermost layer support bar top and still inwall.
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| CN201420620360.7U CN204320308U (en) | 2014-10-24 | 2014-10-24 | Autoclave combination stirred reactor |
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| CN201420620360.7U CN204320308U (en) | 2014-10-24 | 2014-10-24 | Autoclave combination stirred reactor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907032A (en) * | 2015-05-29 | 2015-09-16 | 浙江科技学院 | Hydrothermal reaction kettle |
| CN107032948A (en) * | 2017-06-17 | 2017-08-11 | 石嘴山市瑞新化工有限公司 | A kind of dichloroethanes pretreating device |
| CN108714382A (en) * | 2018-06-11 | 2018-10-30 | 郑州市豫闻实业有限公司 | Batch mixing pot agitating device |
| CN110479161A (en) * | 2019-05-27 | 2019-11-22 | 天津科技大学 | A kind of flow-guiding type axial circulation agitating paddle |
| KR20200029003A (en) * | 2017-07-12 | 2020-03-17 | 아란세오 도이치란드 게엠베하 | Reactor and method for continuous polymerization |
| CN110917943A (en) * | 2019-11-13 | 2020-03-27 | 温州市天瑞制药机械有限公司 | Plant glue dissolving tank |
| CN112029062A (en) * | 2020-09-03 | 2020-12-04 | 周开 | Preparation method of thermoplastic polyurethane elastomer |
| CN114682114A (en) * | 2020-12-25 | 2022-07-01 | 广东博智林机器人有限公司 | Stirring device |
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2014
- 2014-10-24 CN CN201420620360.7U patent/CN204320308U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907032A (en) * | 2015-05-29 | 2015-09-16 | 浙江科技学院 | Hydrothermal reaction kettle |
| CN107032948A (en) * | 2017-06-17 | 2017-08-11 | 石嘴山市瑞新化工有限公司 | A kind of dichloroethanes pretreating device |
| US11291973B2 (en) | 2017-07-12 | 2022-04-05 | Arlanxeo Deutschland Gmbh | Reactor and method for continuous polymerization |
| KR20200029003A (en) * | 2017-07-12 | 2020-03-17 | 아란세오 도이치란드 게엠베하 | Reactor and method for continuous polymerization |
| KR102612251B1 (en) * | 2017-07-12 | 2023-12-08 | 아란세오 도이치란드 게엠베하 | Reactor and method for continuous polymerization |
| CN111032210A (en) * | 2017-07-12 | 2020-04-17 | 阿朗新科德国有限责任公司 | Reactor and process for continuous polymerization |
| JP2020526644A (en) * | 2017-07-12 | 2020-08-31 | アランセオ・ドイチュランド・ゲーエムベーハー | Reactor and continuous polymerization method |
| JP7177134B2 (en) | 2017-07-12 | 2022-11-22 | アランセオ・ドイチュランド・ゲーエムベーハー | Reactor and continuous polymerization process |
| CN111032210B (en) * | 2017-07-12 | 2022-11-22 | 阿朗新科德国有限责任公司 | Reactor and process for continuous polymerization |
| CN108714382A (en) * | 2018-06-11 | 2018-10-30 | 郑州市豫闻实业有限公司 | Batch mixing pot agitating device |
| CN110479161A (en) * | 2019-05-27 | 2019-11-22 | 天津科技大学 | A kind of flow-guiding type axial circulation agitating paddle |
| CN110917943B (en) * | 2019-11-13 | 2021-09-07 | 温州市天瑞制药机械有限公司 | Plant glue dissolving tank |
| CN110917943A (en) * | 2019-11-13 | 2020-03-27 | 温州市天瑞制药机械有限公司 | Plant glue dissolving tank |
| CN112029062A (en) * | 2020-09-03 | 2020-12-04 | 周开 | Preparation method of thermoplastic polyurethane elastomer |
| CN114682114A (en) * | 2020-12-25 | 2022-07-01 | 广东博智林机器人有限公司 | Stirring device |
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